Pokey Pinout Diagram

A vector graphic pinout is also available in Encapsulated PostScript format.

Key

• A0-A3: Memory address bus
• D0-D7: Memory data bus
• Vss: Ground (?)
• Ø2: Clock in (?)
• P0-P7: Paddle inputs
• KR1-KR2: Keyboard row strobe
• Vcc: +5V power
• K0-K5: Keyboard input
• SIO: Serial data in
• ACLK, BCLK: SIO clock in, out (?)
• SOD: Serial data out
• IRQ: Interrupt request to 6502
• CS0-CS1: Chip select (?)
• R/W: Read/write direction
• AUD: Audio output

Note: I have no confirmation of the above descriptions. This is just my best educated guess, using my knowledge of microcomputer design, the function of the Pokey processor, and the interaction between the custom IC's.

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